115550280 has 128 divisors (see below), whose sum is σ = 389491200. Its totient is φ = 30468096.

The previous prime is 115550257. The next prime is 115550311. The reversal of 115550280 is 82055511.

115550280 is a `hidden beast` number, since 1 + 155 + 502 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104209 + ... + 105311.

It is an arithmetic number, because the mean of its divisors is an integer number (3042900).

Almost surely, 2^115550280 is an apocalyptic number.

115550280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115550280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194745600).

115550280 is an abundant number, since it is smaller than the sum of its proper divisors (273940920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115550280 is a wasteful number, since it uses less digits than its factorization.

115550280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220 (or 1210 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 115550280 is about 10749.4316128807. The cubic root of 115550280 is about 487.0688258568.

The spelling of 115550280 in words is "one hundred fifteen million, five hundred fifty thousand, two hundred eighty".